From: Helge Deller <deller@gmx.de>
To: Runyu Xiao <runyu.xiao@seu.edu.cn>
Cc: Rob Clark <robin.clark@oss.qualcomm.com>,
Dave Airlie <airlied@gmail.com>,
Tomi Valkeinen <tomi.valkeinen@ti.com>,
linux-omap@vger.kernel.org, linux-fbdev@vger.kernel.org,
dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org,
stable@vger.kernel.org, Jianhao Xu <jianhao.xu@seu.edu.cn>
Subject: Re: [PATCH] fbdev: omapfb: panel-dsi-cm: initialize lock before registering display
Date: Tue, 18 Aug 2026 18:49:50 +0200 [thread overview]
Message-ID: <27cdcd5f-7cbc-4e22-8ac3-81d427c68f1d@gmx.de> (raw)
In-Reply-To: <20260818135318.1957283-1-runyu.xiao@seu.edu.cn>
On 8/18/26 15:53, Runyu Xiao wrote:
> dsicm_probe() registers the display before initializing ddata->lock.
> Once omapdss_register_display() publishes the display, another consumer
> can reach a dsicm callback that takes this mutex while it is still
> uninitialized.
>
> Initialize the mutex before registering the display so the published
> callbacks always see a valid lock.
>
> Fixes: f76ee892a99e ("omapfb: copy omapdss & displays for omapfb")
> Cc: stable@vger.kernel.org
> Signed-off-by: Runyu Xiao <runyu.xiao@seu.edu.cn>
> ---
> drivers/video/fbdev/omap2/omapfb/displays/panel-dsi-cm.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
applied.
Thanks!
Helge
prev parent reply other threads:[~2026-08-18 16:50 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-18 13:53 [PATCH] fbdev: omapfb: panel-dsi-cm: initialize lock before registering display Runyu Xiao
2026-08-18 16:49 ` Helge Deller [this message]
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